Detachable tooth for handsaws



Feb 20, 1923. 1,445,972.

' R. R. REED DETACHABLE TOOIH FOR HANDSAWS.

FILED JUNE 27, I921- Patented Feb. 26, 1923.

nnraonannn roornkso-e nannsaws.

Application filed 1mm, 192i. Serial no; 480396.

To aZZwiwm it may concern Be 1 known that I, RALPH' R. REED, a

citizen of the United States, residing at Oakland, in the county ofAlameda and State of California, have invented certain new'a'nd usefulImprovements in Detachable Teeth for Handsaws; and I do declarethefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to detachable teeth for hand-saws such as areused by carpenters and the like, and it has for its principal object toprovide a toothed strip for connection to the lower edge of a flexibleblade simulating that found on hand-saws at this time.

The principal feature of the invention is that the manner in which thetoothed member is connected with the blade does not limit or interferewith the depth of the cut as do other saws embodying removable teeth.-

A further aim of the invention is to provide a hand-saw of this classwhich embodies all of the advantages of the ordinary hand-saw such asused by a carpenter and has the additional advantages of enabling theteeth when worn and displaced, to be removed and a new set of teethsubstituted therefor.

A still further-aim of the invention is to provide a saw havingremovable teeth which are connected with the blade by means ofself-gripping resilient jaws. Hence, the employment of special clampingdevices for holding the teeth in place is entirely overcome and thetooth-strip can be easily and readily removed from the blade by hand.

Other features and advantages of the invention will become apparentduring the course of the following description.

In the accompanying drawings forming a part of this specification and inwhichlike numerals are employed to designate like parts throughout thesame:

Figure 1 is a side elevational view of a saw constructed in accordancewith this invention.

Figure 2 is an enlarged detail section taken substantially on the planeof the line 2-2 of Fig. 1.

Figure 3 is an elevational view with parts in section of the blade withthe handle removed, i

Figure ,5; is an elevational view slight-lymodilied form oftheinvention.

F1gure36 as an enlarged detail section Figure a an elevational viewof'one end of the removable toothed strip. 1

of -a taken substantially on the plane ofthe line Figure 7 is anelevational view with parts in section of the blade and toothed strip ofthis form of the inventiondisconnected from one another.

Figure 8 is a top edge view of thetoothed I strip.

Referring to the drawings by numerals, 1 designates a flexible blade ofthe same shape as blades now found on carpenters handsaws. This blade isprovided on its lower edge with integral resilient jaws 2 which providebetween themselves a channel in which the upper edge of a flexible strip3 is received. It is to be pointed out here that the jaws 2 aresufliciently resilient to render themselves self-gripping so that afterthe strip 3 is inserted between them, they will automaticallyfrictionally grip it and hold it in place. The strip 3 referred to isprovided on its lower edge with alternately bent teeth 4 which areproperly set previous to the attachment of the strip 3 tothe aforesaidblade. In order to prevent longitudinal shifting of the strip 3,v theblade is which may be integral therewith or otherwise rigidly securedthereto, these being ranged at the opposite ends of the channel and theadjacent ends of the strip 3 being engaged therewith. The mannerdescribed of detachably connecting thetoothed strip with the blade isnot altogether essential and I do not wish to be limited to thisspecific arrangement. In fact,-I have shown anequipped at its oppositeends with stops 5,

other way in which the invention can be carried out. I therefore directattention to Figs. 5 to 8 inclusive Referring to the figures abovementioned, it will be seen that the toothed strip 3? is provided in itsupper edge with a channel 4? the side walls of which constituteresilient, jaws 5 The blade 1 hasits lower edge thinned as indicated at6 and this portion of the blade is received between the jaws 5 andfrictionally held. The ends ofthe channel 4 are, like the channel in thelower ed e of the blade described in Figures/1 to 3, cIosed by blocksconstituting stops 7 against which and this holder limits the depth ofthe cut;

blade abuts.

the ends of the reduced portion 6 of the Here, I wish to state that inboth forms of the invention, the teeth of the saw are properly set toform a kerf of a width sufliciently large to permit passage of the bladethrough this kerf without any interference. I may state that in manyforms of saws with which I am familiar, the constructions are such thatthe detachable teeth are not directly connected to a flexible blade butsome sort of a holder is provided However, this i's not the case withthe construction and arrangement that I employ.

The manner of attaching and detaching the stripwhich carries the teethis obvious from the drawings and it is therefore thought unnecessary togo into more detail. Since probably the best results may be obtainedwith the'construction and arrangement herein shown and described, thisis taken as a preferred embodiment of the invention. However, I wish itto be understood that minor changes coming within the scope of thesubjoined claim may be resorted to if desired.

I claim:

A hand-saw comprising a flexible blade and a flexible toothed strip, oneof which is formed along one edge with a groove ter1ninating short ofthe ends of this part to provide shoulders, the side portions of saidgroove being resilient to provide jaws, the other part being received insaid groove and gripped tightly and held in operative place by saidjaws, said last named part abutting the aforesaid shoulders to preventrelative sliding movement of said parts.

Q In testimony whereof I have hereunto set my hand.

RALPH RAYMOND REED.

